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by alphanumeric
Fri Feb 15, 2019 10:05 pm
Forum: General discussion
Topic: PiZero GPIO Pin Issues
Replies: 19
Views: 225

Re: PiZero GPIO Pin Issues

Thats good to hear. Enjoy your now working setup. :D
by alphanumeric
Fri Feb 15, 2019 8:55 pm
Forum: General discussion
Topic: PiZero GPIO Pin Issues
Replies: 19
Views: 225

Re: PiZero GPIO Pin Issues

Ok, now that I can see the images, I suspect you have one or more cold soldered joints. Maybe this will help.
https://learn.pimoroni.com/tutorial/s ... -soldering
by alphanumeric
Fri Feb 15, 2019 8:39 pm
Forum: General discussion
Topic: PiZero GPIO Pin Issues
Replies: 19
Views: 225

Re: PiZero GPIO Pin Issues

gordon77 wrote:
Fri Feb 15, 2019 8:18 pm
If l press and hold on the picture links it allows me to download them to my tablet.
All I see is two unclickable black boxes with X's in them.
by alphanumeric
Fri Feb 15, 2019 8:13 pm
Forum: General discussion
Topic: PiZero GPIO Pin Issues
Replies: 19
Views: 225

Re: PiZero GPIO Pin Issues

If you think two adjacent pins are shorted, check it with an ohm meter, if you own one. I didn't see the pictures of your soldering so I can't comment on that. The links to those pictures are dead now.
I would think you'd have to put way to much solder on to get a short on the pin side?
by alphanumeric
Fri Feb 15, 2019 8:01 pm
Forum: General discussion
Topic: PiZero GPIO Pin Issues
Replies: 19
Views: 225

Re: PiZero GPIO Pin Issues

If you are determined to remove the header I'd do as advised above. One pin at a time. The way I'd do it is carefully remove the black plastic bit first. Then heat one pin at a time. When the solder melts hold the Pi tightly in your hand and give it a quick rap against your work bench. Like your kno...
by alphanumeric
Fri Feb 15, 2019 6:26 pm
Forum: General discussion
Topic: PiZero GPIO Pin Issues
Replies: 19
Views: 225

Re: PiZero GPIO Pin Issues

Joy Bonnet pinout is here, https://pinout.xyz/pinout/joy_bonnet#
Start is BCM 26, physical pin 37, according to that.
by alphanumeric
Sun Feb 10, 2019 9:55 pm
Forum: General discussion
Topic: Adafruit MPL115A2 Temp/Pressure sensor - Python
Replies: 6
Views: 3460

Re: Adafruit MPL115A2 Temp/Pressure sensor - Python

If it's i2c its SDA to SDA, SCL to SCL, GND to ground, and Vin to I would think 3.3V?
https://www.adafruit.com/product/992
by alphanumeric
Fri Feb 08, 2019 10:15 am
Forum: General discussion
Topic: RPi high school lab. B+ issues. B no issues.
Replies: 8
Views: 234

Re: RPi high school lab. B+ issues. B no issues.

I've seen some reports of it happening with the 3B+ and Pi Foundation 7 inch touch screen. I've taken to using splitters, one cable to my Pi's micro USB power jack, another cable to my displays Micro USB power, another power feed to my speaker amplifier etc. I don't plug anything into my Pi's USB ot...
by alphanumeric
Fri Feb 08, 2019 10:05 am
Forum: Beginners
Topic: Increasing USB current on Pi 3B+
Replies: 17
Views: 347

Re: Increasing USB current on Pi 3B+

I thought the USB current was software controlled (based on a comment by Jamesh in the Pi3A+ release thread) which indicates to me the USB hub chip controls the maximum available current. On boards without the hub chip, the polyfuse is your limit. On boards without both the hub and the polyfuse, th...
by alphanumeric
Thu Feb 07, 2019 10:12 pm
Forum: Beginners
Topic: Increasing USB current on Pi 3B+
Replies: 17
Views: 347

Re: Increasing USB current on Pi 3B+

Forgot to mention, adding the max_usb_current=1 to the config.txt for a 3B+ has no effect. Its set to 1.2A by default. Going by this, https://www.raspberrypi.org/documentation/faqs/#pi-power 1.2A is the MAX current you can draw across all 4 USB ports. I do believe that is set by the poly fuse. Do t...
by alphanumeric
Thu Feb 07, 2019 9:58 pm
Forum: Beginners
Topic: Increasing USB current on Pi 3B+
Replies: 17
Views: 347

Re: Increasing USB current on Pi 3B+

Forgot to mention, adding the max_usb_current=1 to the config.txt for a 3B+ has no effect. Its set to 1.2A by default. Going by this, https://www.raspberrypi.org/documentation/faqs/#pi-power 1.2A is the MAX current you can draw across all 4 USB ports. I do believe that is set by the poly fuse. Do th...
by alphanumeric
Thu Feb 07, 2019 9:50 pm
Forum: Beginners
Topic: Increasing USB current on Pi 3B+
Replies: 17
Views: 347

Re: Increasing USB current on Pi 3B+

What I did on one of my Pi builds is make up my own custom USB cables. At the Pi end only the Data +, Data - and ground are connected. Basically Data only. On the device end The +5V comes directly from my power supply, bypassing the Pi's poly fuse. And the Data +, Data - and ground from the Pi. I ha...
by alphanumeric
Thu Feb 07, 2019 9:35 pm
Forum: General discussion
Topic: Render station on compute modules
Replies: 4
Views: 132

Re: Render station on compute modules

First off, its Compute module, not DIMM Raspberry. Going with those may end up being expensive. You'll need the compute module and the dev board to plug it into to use it. How many were you going to use? Have a look at his, https://shop.pimoroni.com/products/cluster-hat It may be cheaper and easier ...
by alphanumeric
Thu Feb 07, 2019 9:26 pm
Forum: General discussion
Topic: RPi high school lab. B+ issues. B no issues.
Replies: 8
Views: 234

Re: RPi high school lab. B+ issues. B no issues.

Power supplies are one thing I make it a point to buy from reputable retailers. I don't mind paying for peace of mind.
IMHO, 2.5A is getting iffy with a 3B or 3B+. Especially if you have some other power hungry bits plugged into it.
by alphanumeric
Wed Feb 06, 2019 2:07 pm
Forum: HATs and other add-ons
Topic: HAT with environmental sensors - what should be on it?
Replies: 3
Views: 161

Re: HAT with environmental sensors - what should be on it?

I monitor temperature, humidity, and pressure on my indoor weather clock. On my portable version I measure those three plus ambient light and the UV index. I have Sense Hats in both but only use the LED matrix part to display my measurements. I currently use a BME680 and Si1145 breakout boards. The ...
by alphanumeric
Wed Feb 06, 2019 1:55 pm
Forum: Raspbian
Topic: [Solved] etcher validate failed on stretch images (2018-11-13 versions)
Replies: 5
Views: 173

Re: etcher validate failed on stretch images (2018-11-13 versions)

Not seeing it here. I'd redownload all three images, even though the hashes match. If you haven't already. Its the only common denominator. Maybe download Etcher and reinstall it also.
by alphanumeric
Sun Feb 03, 2019 10:04 am
Forum: HATs and other add-ons
Topic: Sense HAT Alternative / Upgrade ?
Replies: 20
Views: 492

Re: Sense HAT Alternative / Upgrade ?

I do believe the Enviro pHat suffers the same temperature skewing high issue, when mounted on top of a Pi. Not to the same extent though. I went with the BME680 breakout so I could mount it out in the open away from any heat given off by the other electronics. The Sense hat is a nice bit of kit for ...
by alphanumeric
Sat Feb 02, 2019 8:08 pm
Forum: HATs and other add-ons
Topic: Sense HAT Alternative / Upgrade ?
Replies: 20
Views: 492

Re: Sense HAT Alternative / Upgrade ?

Getting back to the topic at hand. Price is going to factor into "would you buy it" big time. Having lots of sensors is cool, if you use them all? Even when I was using the onboard sensors on my Sense Hat, it was only the temperature, humidity, and pressure. I have yet to ever use the motion sensors...
by alphanumeric
Sat Feb 02, 2019 7:54 pm
Forum: HATs and other add-ons
Topic: Sense HAT Alternative / Upgrade ?
Replies: 20
Views: 492

Re: Sense HAT Alternative / Upgrade ?

Ok, just went and downloaded it from Bosh. It appears to be coded in C? Everything else I'm currently doing on that Pi I'm doing in Python. Everything I do on my PI's I do in Python, lol. I have zero C skills. I will be learning some C code, at some point, I just got my first Arduino. I'll poke arou...
by alphanumeric
Sat Feb 02, 2019 3:17 pm
Forum: HATs and other add-ons
Topic: Sense HAT Alternative / Upgrade ?
Replies: 20
Views: 492

Re: Sense HAT Alternative / Upgrade ?

What's the bsec? If thats the air quality part, no, I only monitor the temperature, humidity, and barometric pressure.

Just Googled it, still no, I'm using the Pimoroni software / python library as its thier Breakout Garden BME680.
by alphanumeric
Sat Feb 02, 2019 12:28 pm
Forum: HATs and other add-ons
Topic: Sense HAT Alternative / Upgrade ?
Replies: 20
Views: 492

Re: Sense HAT Alternative / Upgrade ?

This is what I did, https://1drv.ms/f/s!AjOYwiwlwDtpgq8_0VrdS3_H5xL_AA I put a DS3231 RTC on a Proto Hat and added some more headers for i2c sensor boards etc. I put a stacking header on the Proto Hat so it can go between my Pi and the Sense Hat I ran into several issues with the Sense Hat, temp rea...
by alphanumeric
Tue Jan 29, 2019 1:36 pm
Forum: General discussion
Topic: How many pieces of pi are too many?
Replies: 72
Views: 1958

Re: How many pieces of pi are too many?

Two 3B+'s, two, 3B's, a 3A+, two A's, and a dozen or so, I've lost count, Zero W's.
I've passed on a couple 2B's and B+'s to new homes.
My build pictures are here, https://1drv.ms/f/s!AjOYwiwlwDtpgUMsp2qnevKpGEHb
by alphanumeric
Sun Jan 20, 2019 1:36 pm
Forum: Beginners
Topic: Logitech Wireless Touch Keyboard K400: Does it work for you?
Replies: 90
Views: 108681

Re: Logitech Wireless Touch Keyboard K400: Does it work for you?

I've never had any problems using my K400 with Raspbian. I often move it from one Pi to another. The pairing with the Unifying dongle stays regardless of what device its used with. It should be already linked to the dongle that comes with it. I've linked and unlinked devices to my dongles in the pas...
by alphanumeric
Fri Jan 18, 2019 1:27 pm
Forum: General discussion
Topic: new to soldering - safety questions, etc.
Replies: 46
Views: 1180

Re: new to soldering - safety questions, etc.

When I was still working we had certain equipment we were not allowed to repair on station. It had to be sent to a central repair facility. Mostly because it was SMT stuff but also because of the above concerns. It was ground based mill spec equipment used in civil aviation. Even when repaired corre...
by alphanumeric
Fri Jan 18, 2019 1:11 pm
Forum: General discussion
Topic: new to soldering - safety questions, etc.
Replies: 46
Views: 1180

Re: new to soldering - safety questions, etc.

be aware that as you trigger it and the piston moves back, the tip jumps forward. I've got a new solder sucker with a silicone tube for the nozzle. Being flexible it can be pushed right up against the joint to desolder and doesn't jump as much as a regular hard plastic nozzle. It is also heat resis...

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