Search found 6 matches

by perigalacticon
Wed Oct 11, 2017 11:25 am
Forum: PCB Design Questions
Topic: exclude smd pad from tCream / gtp
Replies: 1
Views: 773

exclude smd pad from tCream / gtp

I need to exclude some SMD pads from the gtp file such that no solder paste is applied to them. I am using the Sparkfun cam job. How do I exclude SMD pads from tCream or stop them from appearing in the gtp file?

Thanks.
by perigalacticon
Tue Oct 10, 2017 2:35 pm
Forum: PCB Design Questions
Topic: PCB Hole size to use with ISP Pogo Adapter
Replies: 2
Views: 706

PCB Hole size to use with ISP Pogo Adapter

Designing a PCB and need to know what hole size to use with the Sparkfun ISP Pogo Adapter:

https://www.sparkfun.com/products/11591

It appears that it works with the std 2x3 ICSP pin header footprint, is this correct?
by perigalacticon
Tue Sep 26, 2017 7:06 pm
Forum: Projects
Topic: voltage regulator recommendations
Replies: 0
Views: 299

voltage regulator recommendations

I'm looking for recommendations for voltage regulators for a battery powered device that needs a 5V and a 3.3V regulator. The 5V regulator requires 500mA absolute max (powering a .5W amplifier, 5 WS2812s, and an ATTINY MCU); the 3.3V requires 30mA absolute max (a flash memory chip). As it's battery ...
by perigalacticon
Wed Jul 12, 2017 11:43 pm
Forum: Projects
Topic: LED Matrix Driver
Replies: 1
Views: 529

LED Matrix Driver

Hello, I am looking for a led matrix driver for arduino that will power a charlieplex matrix of 50 leds that require 40mA at 5V each. I have tried the IS31FL3731 but my leds are too dim, the current requirement is too high for it. Do you have a board that will meet my requirement or know where I can...
by perigalacticon
Thu Oct 27, 2016 9:26 pm
Forum: PCB Design Questions
Topic: soldering a PCB for the first time questions
Replies: 1
Views: 842

soldering a PCB for the first time questions

I am assembling PCBs for the first time. The components are thru-hole and there is a ground plane that many components are connected to. I had the PCBs made by standard processes at a well-known supplier. Should I be concerned when soldering the pads that do not connect to the ground plane? I am con...
by perigalacticon
Mon Aug 08, 2016 3:21 am
Forum: Projects
Topic: TinyWire external EEPROM library for ATtiny85?
Replies: 0
Views: 453

TinyWire external EEPROM library for ATtiny85?

Hi I'm looking for a EEPROM library for external EEPROM chips that I can use with the ATtiny85 and a TinyWire library. I have tried converting several based on Wire such as (https://github.com/JChristensen/extEEPROM) but have not been successful yet.

Thanks