Someone has added DLDI support to my old TI-85 Emulator. I don’t have any exotic devices, so I can’t say how well it works.

You can download it here: ds85_r3.rar

There’s a forum thread about it going on here: teamcylops.com

Let me know if it works/doesn’t work on your particular device.

I have a prototype of the hardware side of my Nintendo DS-based heart rate monitor. I’m using the awesome DSerial to interface an IR LED & IR phototransistor to the DS.

It works ok, but the signal is not strong enough. Slight movements can make the data unusable. I think I need to work on either amplifying the signal, or increasing the sensitivity of the DSerial. Also I need to rig up some velcro to stick the sensor to your finger, so you don’t have to hold it in place.

Here you can see my “sensor”:

Here is the connection to the DS:

And finally, here is a screenshot of the DS’s lower screen, which is just graphing the data coming from the DSerial’s ADC:

Check out this movie of it in action: dserial_heart_monitor.avi (1.5MB)

A neat-looking device for DS homebrew development is natrium42’s DSerial. The features include

• 8051 microcontroller running at 24MHz
• Reprogrammable from DS, premade firmwares available
• Free development tools available
• 18 GPIO lines, 2 status LEDs
• UART with RS-232 level converter (can be disabled)
• Full-speed USB 2.0 device (does not support USB host)
• PWM and ADC available
• 2D tilt sensor

I’m hoping to make some cool stuff with it…my first plan is to build a portable heart monitor, that can also tell you how stressed-out you are, based on your ‘coherence’ (essentially you take the FFT of your heart rate over time, and you want most of the energy to fall near to 0.1Hz)

If your card is not supported by Draw, but it does have SRAM (that is, a slot-2 card), then use the save to SRAM option in Draw. Transfer the save file to your PC, and try renaming it to .png and see if it opens.

If it does NOT open, try this website: Savegames convertor and convert your file to the “Supercard One / Ninjapass / DSLinker (.sav)” format, and then try renaming to PNG.

This is a basic EEPROM backup tool. Basically it lets you copy the save-games from your commercial game carts back and forth to your flashcart. It also supports using SRAM as storage, and if you have a gba cart in slot-2, and a flashcart in slot-1, you could copy the sram off the gba cart to your flashcart.

It has various transfer functions, basically what you see in this screenshot:

Hexdump is not implemented yet.

Download it here: eepinator.nds

UPDATE:If you’ve got only a slot-1 card, this tool may be useful to you:
savesender
It uploads your saves via WIFI to your pc, eliminating the problem slot-1 flashcard from the equation!