diff --git a/functions.lua b/functions.lua
index b7ff875..ed165e6 100644
--- a/functions.lua
+++ b/functions.lua
@@ -308,7 +308,7 @@ local refresh_adjacent = function(digtron_id)
 			local potential_target = hash + cardinal_dirs_hash[facedir_to_dir_index(data.node.param2)]
 			if layout[potential_target] == nil then
 				local fields = data.meta.fields
-				adjacent_to_diggers[potential_target] = {periodicity = fields.periodicity, offset = fields.offset}
+				adjacent_to_diggers[potential_target] = {period = fields.period, offset = fields.offset}
 			end
 		end		
 	end
diff --git a/nodes/node_digger.lua b/nodes/node_digger.lua
index 889f7bc..c33de51 100644
--- a/nodes/node_digger.lua
+++ b/nodes/node_digger.lua
@@ -2,6 +2,38 @@
 local MP = minetest.get_modpath(minetest.get_current_modname())
 local S, NS = dofile(MP.."/intllib.lua")
 
+local player_interacting_with_digtron_pos = {}
+
+local get_formspec = function(pos, player_name)
+	local meta = minetest.get_meta(pos)
+	
+	local period = meta:get_int("period")
+	if period < 1 then period = 1 end
+	local offset = meta:get_int("offset")
+	
+	return
+	"size[5,3]" ..
+	default.gui_bg ..
+	default.gui_bg_img ..
+	default.gui_slots ..
+	"field[0.5,0.8;1,0.1;period;" .. S("Periodicity") .. ";" .. period .. "]" ..
+	"field_close_on_enter[period;false]" ..
+	"tooltip[period;" .. S("Digger will dig once every n steps.\nThese steps are globally aligned, all diggers with\nthe same period and offset will dig on the same location.") .. "]" ..
+	"field[1.5,0.8;1,0.1;offset;" .. S("Offset") .. ";" .. offset .. "]" ..
+	"field_close_on_enter[offset;false]" ..
+	"tooltip[offset;" .. S("Offsets the start of periodicity counting by this amount.\nFor example, a digger with period 2 and offset 0 digs\nevery even-numbered block and one with period 2 and\noffset 1 digs every odd-numbered block.") .. "]" ..
+	"button[2.2,0.5;1,0.1;set;" .. S("Save &\nShow") .. "]" ..
+	"tooltip[set;" .. S("Saves settings") .. "]"
+end
+
+local update_infotext = function(meta)
+	local period = meta:get_int("period")
+	if period < 1 then period = 1 end
+	local offset = meta:get_int("offset")
+
+	meta:set_string("infotext", S("Digger period @1 offset @2", period, offset))
+end
+
 minetest.register_node("digtron:digger", {
 	description = S("Digtron Digger"),
 	_doc_items_longdesc = nil,
@@ -84,4 +116,37 @@ minetest.register_node("digtron:digger_static",{
 	sounds = default.node_sound_metal_defaults(),
 	can_dig = digtron.can_dig,
 	on_blast = digtron.on_blast,
+	
+	on_rightclick = function(pos, node, clicker, itemstack, pointed_thing)
+		if clicker == nil then return end
+		local player_name = clicker:get_player_name()
+		player_interacting_with_digtron_pos[player_name] = pos
+		minetest.show_formspec(player_name, "digtron:digger", get_formspec(pos, player_name))
+	end,
 })
+
+minetest.register_on_player_receive_fields(function(player, formname, fields)
+	if formname ~= "digtron:digger" then
+		return
+	end
+	local player_name = player:get_player_name()
+	local pos = player_interacting_with_digtron_pos[player_name]
+	if pos == nil then return end
+	local meta = minetest.get_meta(pos)	
+	
+	--TODO: this isn't recording the field when using ESC to exit the formspec
+	if fields.key_enter_field == "offset" or fields.offset then
+		local val = tonumber(fields.offset)
+		if val ~= nil and val >= 0 then
+			meta:set_int("offset", val)
+		end
+	end
+	if fields.key_enter_field == "period" or fields.period then
+		local val = tonumber(fields.period)
+		if val ~= nil and val >= 1 then
+			meta:set_int("period", val)
+		end
+	end
+	
+	update_infotext(meta)
+end)