Search found 3 matches

by david.prentice
Thu Sep 17, 2015 2:34 pm
Forum: Arduino Shields
Topic: MCU Friend 3.5" Colour TFT touch screen (HCARDU0096)
Replies: 2
Views: 15938

Re: MCU Friend 3.5" Colour TFT touch screen (HCARDU0096)

Have you discovered why the microSD does not work with this Shield? As far as I can see, the connector has 3.3V and GND in the correct places. And the MEGA2560's SPI pins are all going to the correct pins via 10k series resistors. This should satisfy the 3.3V signal levels. So the regular <SD.h> lib...
by david.prentice
Tue Apr 01, 2014 10:56 pm
Forum: RTC
Topic: Tiny RTC DS1307 + 24C32 Real Time Clock Module (HCMODU0011)
Replies: 81
Views: 90594

Re: Tiny RTC DS1307 + 24C32 Real Time Clock Module (HCMODU00

The only gotcha is:

Do you really want to measure the temperature of the module pcb ?

Or the temperature at the end of an external probe?
by david.prentice
Mon Jan 20, 2014 8:49 am
Forum: Display
Topic: SSD1306 128x64 Pixel uOLED display module (HCMODU0050&2)
Replies: 42
Views: 84221

Re: SSD1306 128x64 Pixel OLED display module (HCMODU0050&2)

I bought one of these displays because it was advertised as being I2C. When it arrived on Saturday, I noted that it was configured for 4-wire SPI. The Adafruit Arduino SPI sketch works fine on this module. I then changed the BPn links to select I2C. According to the data sheet, you have to link D2, ...