Recent content by Ben967

Hi, I am using the budget serial LCD backboard from tech supplies connected to a hd44780 20x4 LCD but when powered up all it does is flashes the backlight on and off once and then does nothing. I have changed the line use oled to use LCD in the firmware file, any help greatly appreciated!

Hi, Just wondering if anyone knows where I can buy a 20x4 oled alphanumeric display, similar to the ones from tech supplies, can't seem to find any other sellers Ben

Hi, I recently picked up a ds1302 RTC from ebay, I have been trying to interface it using a picaxe 18m2, but can find very little code examples of how to do so. The connections from the 18m2 to the RTC module are as follows: Clock = c.0 Data = c.7 Reset = c.6 The closest I have gotten is...

Hi guys, After a bit of fiddling with a Bluetooth serial module from eBay, I have managed to get a picaxe to send data to the pc successfully, although it is still mixed up on pc end so I think maybe baud rates may be wrong. I have provided the Bluetooth module datasheet and what is displayed on...

Hi guys, Just wondering if anyone knows anywhere in the U.K that will sell custom PCB's and how much they would be for a small volume or ideally individual boards. Also if not, would anyone be interested if I could supply individual custom PCB's for a few quid each (I could also make custom...

Hi everyone, Just a little project, reading time from a ds1307 RTC into a picaxe 18m2 and displaying it on an lcd. I know the lcd is working as have had it displaying test data correctly and RTC has been wired as shown in the picaxe i2c tutorial but I cannot figure out how to convert the data to...

Hi guys, Just wanted to know how to go about calculating the highest and lowest temperature recorded, when using 12 bit resolution on the ds18b20. I have done it with the standard resolution temperature readings but they only use one byte, 12 bit resolution uses a word variable so not sure how...

Hi all, This is probably more a question for Tech Supplies but I have just bought the 16x2 OLED and think its great. The question is can Tech Supplies stock other OLED's, such as a 20x4 character OLED or a graphic one. Would anyone else be interested if these modules could be supplied?

Hello everyone, found a cheap bluetooth serial module 2 weeks ago, arrived today and seems to work well, although I havent tested it properly yet. Thought I would share it with you all: http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=280611558914&ssPageName=STRK:MEWNX:IT#ht_3583wt_952 Will...

Hi everyone, I have seen many posts about oled displays and really wanted to try one myself but all the ones i've seen are pretty expensive. Does anyone know about any which are relatively cheap? Thanks :D

Hi guys, Just bought a humidity sensor, the seller said the humidity level is typically 1M at 30% relative humidity to 1K at 90% relative humidity. Has anyone worked with a sensor like this before and knows a way I could use this to calculate the humidity level as a percentage? Thanks, Ben

Hi Guys, not a major problem, but have built a binary thermometer and values seem to jump inconsistently. For example when temperature is 22, binary values seem to jump between 22 and 16. Any ideas, code and connections are attached.

Hi, I have a picaxe 08m connected to a 20x4 lcd (Attached JHD204A datasheet) via a serial converter I bought of ebay (Attached Datasheet BV4108) but cannot for the life of me figure out how to use it. I have tried sending multiple commands from the datasheet but nothing works :( On powerup the...

Hi, I am trying to connect a frm010 driver chip from tech supplies to a 20x4 hd44780 lcd, but having trouble. Does anyone have a pcb design that would work with the firmware chip and lcd? Thanks, Ben

Hi, I wondered if you guys could help me, I have recently bought a 20x4 lcd display which uses the hd44780 driver chip. I also bought the lcd firmware chip from techsupplies and have followed the picaxe datasheets exactly to connect the fimware chip to the lcd, but have had no luck, although the...